A Japan-based B2B AI product company with an established global customer base is expanding its platform team. This company is already selling its product worldwide, supporting enterprise customers across multiple regions. Rather than chasing a broad market, the product focuses on a highly specialized niche—a complex problem space where deep technical expertise, security, and reliability truly matter. To support continued global growth, the team is hiring a Site Reliability Engineer to strengthen the reliability and scalability of its production systems. Compensation is highly competitive and, in many cases, exceeds packages offered by some global tech companies operating in Japan. Responsibilities
Own reliability and operations for a globally deployed SaaS platform
Support production systems for web applications
Improve system stability through automation and CI/CD
Operate containerized services using Kubernetes
Work closely with engineers to keep systems scalable and resilient
Requirements
Years of experience in SRE, Platform, or Infrastructure engineering
Experience supporting SaaS products in production
Experience working with web applications
Proficiency in Go or Python for automation and tooling
Hands-on experience with CI/CD pipelines
Experience with major cloud platforms
Experience using Infrastructure as Code tools
Familiarity with container orchestration
If you want to work on a globally used product in a deeply specialized niche, with real ownership and compensation that can reach up to ¥18M, this role is worth a serious look.